Bolt-anchor.



S. W. BRAINARD.

BOLT ANCHOR. APPLIOATION FILED JUNE 26, 191 2.

Patented July 29, 1913.

A TTORNEYS TTED @TATEFS PATENT SIDNEY W. BEAINARD, OF AKRON, OHIO,ASSIGNOR TO AUTOMATIC SPRINKLER COM- PANY OF AMERICA, OF NEW YORK, N.Y., A CORPORATION OF NEW YORK.

' BOLT-ANCHOR.

Specification of Letters Patent.

Patented July 29, 1913.

Application filed June 26, 1912. Serial No. 705,997.

To all whom it may concern:

Be it known that I, SIDNEY \V. BRAINARD, a citizen of the United States,and resident of Akron, county of Summit, and State of Ohio, have madecertain new and useful Inventions Relating to Bolt-Anchors, of which thefollowing is a specification, taken in connection with the accompanyingdrawing, which forms partof the same.

This invention relates especially to bolt anchors by which ordinarybolts may be readily and securely mounted in holes in concrete walls,ceilings, tiling, etc., the bolt anchor being preferably stamped up outof sheet. metal and being provided with one or more resilient clampingmembers to detachably grip the bolt adjacent the head and hold the partsin position during insertion while being readily disengaged by toggleaction so that the anchor is brought into holding position in which itsseat cooperates with the bolt head.

In the accompanying drawing showing in a somewhat diagrammatic way anillustrative embodiment of this invention, Figure 1 shows the bolt andanchor when being inserted; Fig. 2- shows the parts in normal holdingposition; Fig. 8 is an enlarged lon gitudinal sectional view through theanchor; and Fig. l: is an end view thereof.

The boltanchor may, if desired, be cheaply and conveniently stamped upor otherwise formed from sheets of steel or the like one-sixteenth of aninch or so thick or may be constructed in any other desired way.

The anchor may be provided with a centrally located bolt aperture 2between its substantially parallel sides 1, the edges of which as shownin Figs. 2 and 3 act edgewise in bridging the hole 10 and rigidlysupport-- ing the bolt head in a suitable seat 7 for the bolt headadjacent the central portion of the anchor. The yoke 3 connects thesides at one end of the anchor and holds them in proper alinement with asuitable bridge 4 connects them at the other end. The anchor ispreferably formed with a suitable clamp to resiliently and detachablyengage the bolt and if desired this clamp may comprise clamping members5 adjacent one end of the bridge at which is preferably bent downward orrecessed as shown in Fig. 4 so as to accommodate the bolt when the partsare in the inserting position shown in Fig. 1.

Under service conditions the bolt 8 is inserted through the boltaperture 2 in the anchor which is swung into line with the bolt and theclamp forced against the bolt so as to grip it suttlciently to hold theparts in this inserting position shown in 1 while the bolt and anchorare manually inserted through the hole 10 formed in any desired way inthe wall, ceiling, etc., 11. lVhen fully inserted the contact point atthe end of the yoke 3 is brought into engagement with the inner edge ofthe hole as shown in Fig. 1 and a downward pull on the bolt swings theyoke out of contact therewith so as to cause a toggle action between themembers forcing the clamp out of engagement with the bolt and allowingthe anchor to come into firm holding engagement with the inner fiat faceof the wall, etc., inside the hole. The head 9 of the bolt, which may beof any desired shape, simultaneously comes into holding engagement withthe seat 7 so as to aline the anchor to the desired extent, thesubstantially straight supports 6 on the sides 1 which may besubstantially straight or parallel as shown, being made of sufficientlength and size to give proper holding engagement in connection with theconcrete or other material with which they cooperate.

This invention has been described in con nection with a number ofillustrative embodiments, forms, proportions, parts, materials andmethods of manufacture, to the details of which disclosure the inventionis not of course to be limited, since What is claimed as new and what isdesired to be secured by Letters Patent is set forth in the appendedclaims.

1. The bolt anchor formed of stamped sheet steel and provided with abolt aperture partly sepa 'ating its substantially parallel sides, ayoke connecting said sides and having a projecting contact point at theend of the anchor, a bridge connecting said sides at the other end ofsaid anchor and bent downward to accommodate the bolt and resilientclamping members on the end of said bridge and integral therewith todisengage ably grip the shank of a bolt and hold the anchor in insertingposition, said sides be ing formed with an alining seat for the bolthead adjacent said bolt aperture and being formed with substantiallystraight supports to cooperate with the wall, etc.

2. The bolt anchor formed of stamped sheet metal and provided with abolt aperture partly separating its sides, a yoke connecting said sidesand having a projecting contact point at the end of the anchor, a bridgeconnecting said sides at the other end of said anchor and resilientclamping mem bers on the end of said bridge and integral therewith todisengageably grip a bolt and hold the anchor in inserting position,said sides being formed with an alining seat for the bolt head adjacentsaid bolt aperture and being formed with substantially straight supportsto, cooperate with the wall, etc.

3. The bolt anchor formed of sheet metal and aprovided with a boltaperture partly separating its substantially parallel sides, an upwardlybent yoke connecting said sides adjacent one end of the anchor, aclownwardly bent bridge connecting said sides adjacent the other end ofsaid anchor to accommodate the shank of the bolt, a seat for the bolthead formed in said sides adjacent said bolt aperture enabling saidsides to act edgewise in bridging the hole and holding the bolt inposition in said hole and resilient clamping means on said. anchor todisengageably grip the shank of the bolt and hold the anchor ininserting position.

4-. The bolt anchor formed of sheet metal and provided with a boltaperture partly separating its sides, a yoke connecting said sides andhaving a projecting contact point at one end of the anchor, a bridgeconnecting said sides at one end of said anchor and resilient clampingmembers to disengageably grip the bolt and hold the anchor in insert- 5.The bolt anchor formed ofsheet metal and provided with a bolt aperture,a yoke connecting the sides of the anchor adjacent one end thereof, anoppositely bent bridge connecting said sides adjacent the other. end ofsaid anchor and resilient clamping means on said anchor adjacent one endthereof to disengageably grip the shank of a bolt and releasably holdthe anchor in inserting position substantially parallel thereto.

6. The bolt anchor formed of sheet metal and provided with a boltaperture, a yoke connecting the sides at the end of the anchor, a bridgeconnecting said sides at the other end of said anchor and resilientclamping means on said anchor to disengageably grip the bolt and holdthe anchor in inserting position.

7. The bolt anchor provided with a bolt aperture adjacent its middleportion, a yoke having a projecting contact point at the end of theanchor, and integral resilient clamping means on said anchor adjacentone end thereof to disengageably grip the shank of a bolt and hold theanchor in inserting posi ticn substantially parallel thereto. 1

S. The belt anchor provided with a bolt aperture adjacent its middleportion and resilient clamping means on said anchor adjacent one endthereof to disengageably grip the shank of a bolt. and hold the anchorin inserting position substantially parallel thereto.

SIDNEY 'W. BRAINARD. lVitnesses HARRY L. DUNCAN, LOUIS Conn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). G."

